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Jun 30, 2009 7:39:21 PM

Using htmlfill to fill forms in

Tags: mako pylons

This snippet shows how to use a Mako def as a Mako filter to fill in a form.

First, in a Mako library file (ie, some arbitrary Mako template that you store a lot of Mako def's you use elsewhere), add a def like so:

<%def name="formfill(content)">
<% errors = c.form_errors or {} %>
% if not errors and not request.params:
${content |n}
% else:
${htmlfill.render(content, request.params.mixed(), errors) | n}
% endif
</%def>

## This is needed to import htmlfill
<%!
from formencode import htmlfill
%>

Then elsewhere, wherever you have a form, wrap it in a def like so:

${search_form()}

<%def name="search_form()" filter="widget.formfill">
    <form action.....>
    .....
    </form>
</%def>
<%namespace name="widget" file="/widgets.mako"/>

This is assuming the formfill def was in a /widgets.mako file, which is where I usually keep various def's I used all over.

Also note that I pull errors from c.form_errors, and if there's no form_errors populated, and no request params the form is rendered without being filled with htmlfill. Feel free to change as needed.

Comments (66)

Ergo

Dec 30, 2009 6:25:13 PM

Thats a really interesting idea :-) thanks

densk

Sep 20, 2011 8:35:23 PM

This will not have effect as a matter of fact, that ’s what I suppose.

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Oct 16, 2011 7:27:22 PM

Code has been helpful for me to use htmlfill to fil in the forms. Will test it further and see how it goes. sim only deals

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I am new to Mako def and just learning how to use Mako def from this site. From this post I have learned to use a Mako def as a Mako filter to fill in a form. The code required to be added on the Mako library file for that is also provided in this post and so I can try using html fill to fill forms as mentioned in this post. I need to take a print out but I guess clp 300 toner is out of stock with me. I am not an expert to make changes according to errors and so I will post the errors if any shown here and please reply me with the changes that I need to make.

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